Protest from delinquent caned in haste heartlessly (3,3,3)
I believe the answer is:
hue and cry
'protest' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'from delinquent caned in haste heartlessly' is the wordplay.
'from' becomes 'hu' (I am not sure about this - if you are sure you should believe this answer much more).
'delinquent' indicates anagramming the letters (a suspicious or criminal version of the letters).
'in haste' becomes 'rashly' (I've seen this in another clue).
'heartlessly' says to hollow out the word (remove centre letters).
'rashly' with its centre removed is 'ry'.
'caned' is an anagram of 'eandc'.
'hu'+'eandc'+'ry'='HUE AND CRY'
Can you help me to learn more?
(Other definitions for hue and cry that I've seen before include "Loud clamour - pursuit of criminal" , "Fuss" , "Hullabaloo" , "Loud public clamour" , "furore" .)